The present disclosure discloses an organic light-emitting display panel and a driving method thereof, and an organic light-emitting display device. The organic light-emitting display panel comprises a pixel array, a plurality of pixel driving circuits, a plurality of reference voltage signal lines and a plurality of data voltage signal lines. The plurality of pixel driving circuits include a first, second and third pixel driving circuits, the first pixel driving circuit and the second pixel driving circuit are adjacent to each other in a row direction of the pixel array, and the second pixel driving circuit and the third pixel driving circuit are adjacent to each other in the row direction of the pixel array. The first pixel driving circuit and the second pixel driving circuit share one reference voltage signal line, and the second pixel driving circuit and the third pixel driving circuit share one data voltage signal line.